Reaping or mowing machine knife



(Nomodel.)

. VuLAPHAM.

REAPING 0R MOWING MACHINE KNIFE. I No. 265,105. Patented Sept. 26, 1882.

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UNITED STATES PATENT OFFICE.`

VALENTINE LAPIAM, OF MARION,V ASSIGNOR OF TWOTHIRDS .TO JOHN S. FRANZ, OF SAME PLACE, AND J. B. FRANZ, OF MANSFIELD, OHIO.

4REAPING OR MOWING MACHINE KNIFE.

SPECIFICATION forming part of Letters Patent No. 265,105, dated September 26, 1882.

Application tiled January 3, 1882. (No model.)

To all whom it may concern:

Be it known that I, VALENTINE LAPHAM, of Marion, in the county of Marion, and in the State of Ohio, have invented certain new and `5 useful Improvements in Knives for Reaping- Machines, Flowing-Machines, and Machinesy for Mowing Lawns, and I do herebydeclare that the following is a full, clear, and exact description thereof, reference being had io the 1o accompanying drawings, and tothe letters of vreference marked thereon, making a part of this specification. i

This invention relates to certain improvements in knives for mowingmachines, and it hasjfor its objects to providejan improved means whereby a series of detachable knives or cutters may be secured in the cutter-head in such manner that one or more may be re-v moved for sharpening or in order to here 2O placed in case ot' injury. `These objects I attain bythe devices illustrated in the accompanying drawings, in whichl Figure l represents a top view of my device complete; Fig. 2, a longitudinal horizontal sectional view of the cutter-head, taken on aline just above the upper faces of the knives; Fig. 3, a detached longitudinal vertical section of a portion of the device, showing the latch for locking the knives or cutters in thecutter-head,

and Fig. ltadetached viewof one of the knives. The letter Aindicates two fiat parallel bars,

and B and G two interposed metallic plates.

These plates are placed between the bars, one

at each end, the plate B at the inner end beinginclined on its inner face, as indicated in Fig. 2, and the plate O at the outer end being curved ouits inner face, as shown. 'lheplates are firmly secured together by means ot' bolts w l) passing through them at equidistant points,-

4o the ends being riveted in countersunk apertures,"so thatfthe cutterhead upon its upper and lower surfaces will be perfectly smooth.

The letter E indicates the detachableknives or cutters. The said cutters or knives have angular cutting-edges, as usual, and near their rear edges, on one side, are provided with curved recesses F, and on the other side with curved lugs G,which are adapted to enterand interlock with the recesses, as' indicated, the said lugs extending and locking under the transverse bolts also. The lug ot' the outer knife-section ,locks under the curved 'plate at the outer end of the cutter-head, as shown in Fig. 2,.and thein'ner cutteris locked at its recessed side by means ot` a plate, H., which is provided at one end with a curved lug, h., the other end being beveled, so as to it against 4theinclined edge ofthe plate B. The plateH is provided with a lug, t', at its upper outer corner, by means of which it may be removed from between the bars. l

The letter I indicates a block mounted upon the upper side near the inner end of the cutter-head. This block has a transverse aperture,

K, for the reception of' the pin Lof the pitmau4 M. 'Io `the said block is pivoted a latch, N, provided with a projection, n, which is adapt ed to'pass through an opening, l), in the upper ba1"ofciitter l1ead and enter a slot, m, in the plate H, so as to hold said plate in pla-ce and lock the parts firmly together. The latch is provided with an aperture, p,through which the pin of the pitman passes when the latch is down, thus locking the latch in place.

Having thus described my invention, what I claim, and desire to secure by Letters Patent,

In combination with the bars A A, the connecting-bolts D, the knives E, provided with the curved lugs G, adapted to engage under the said bolts, and with curved recesses F, into which `tbe said lugs are adapted to set, the plates B and O, and the lockingvplate I1, and locking device N, all arranged substantially as and for the purposes speciiied.

In testimony whereof I aftix my signature, in presence of two witnesses, this 17th day ot' December, 1881.

' VALENTINE LAPHAM. Witnesses:

GAss WrLsoN,

J. T. MATTHEWS. 

